CN107611956A - A kind of small high voltage switch cubicle - Google Patents
A kind of small high voltage switch cubicle Download PDFInfo
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- CN107611956A CN107611956A CN201711068445.3A CN201711068445A CN107611956A CN 107611956 A CN107611956 A CN 107611956A CN 201711068445 A CN201711068445 A CN 201711068445A CN 107611956 A CN107611956 A CN 107611956A
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- limiting fuse
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- 239000006096 absorbing agent Substances 0.000 claims abstract description 14
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000001052 transient effect Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
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Abstract
The present invention provides a kind of small high voltage switch cubicle, and it includes cabinet, the incoming relay-protection circuit and outlet protection circuit that bus is equipped with the cabinet and is connected on the bus, wherein：The incoming relay-protection circuit includes disconnecting switch and vacuum circuit breaker; the input of the vacuum circuit breaker is connected with the input adapter of the incoming relay-protection circuit; the output end of the vacuum circuit breaker is connected with the input of the disconnecting switch, and the output end of the disconnecting switch is connected to the bus；The outlet protection circuit includes limiting fuse and rc absorber; the input of the limiting fuse is connected with the bus; the output end of the limiting fuse is connected to the out splice going splice of the outlet protection circuit; the input of the rc absorber is connected to the tie point of the limiting fuse and the bus, the output head grounding of the rc absorber.
Description
Technical Field
The invention relates to the field of power equipment, in particular to a small high-voltage switch cabinet.
Background
The high-voltage switch cabinet is widely used for coal-to-electricity engineering and other user engineering. The power distribution system has higher electrical parameters and can meet the requirements of most secondary power distribution users.
In order to ensure the safety of electricity utilization, the high-voltage switch cabinet must be provided with a circuit protection device so as to solve the possible disastrous impact and damage of the huge short-circuit current to the power equipment
Disclosure of Invention
The invention aims to provide a small-sized high-voltage switch cabinet, which well solves the possible disaster impact and damage of power equipment caused by huge short-circuit current, and the specific technical scheme of the invention is as follows:
the utility model provides a small-size high tension switchgear, its includes the cabinet body, the internal generating line that is equipped with of cabinet and connects inlet wire protection circuit and the protection circuit that is qualified for the next round of competitions on the generating line, wherein: the incoming line protection circuit comprises an isolating switch and a vacuum circuit breaker, wherein the input end of the vacuum circuit breaker is connected with the input connector of the incoming line protection circuit, the output end of the vacuum circuit breaker is connected with the input end of the isolating switch, and the output end of the isolating switch is connected to the bus; the outgoing line protection circuit comprises a current-limiting fuse and a resistance-capacitance absorber, wherein the input end of the current-limiting fuse is connected with the bus, the output end of the current-limiting fuse is connected to the output connector of the outgoing line protection circuit, the input end of the resistance-capacitance absorber is connected to the connection point of the current-limiting fuse and the bus, and the output end of the resistance-capacitance absorber is grounded.
In a specific embodiment, the incoming line protection circuit further includes an arrester and a first charged sensor, an input end of the arrester is connected to a connection point between the vacuum circuit breaker and the input connector, an output end of the arrester is grounded, an input end of the first charged sensor is connected to a connection point between the vacuum circuit breaker and the input connector, and an output end of the first charged sensor is grounded; the outgoing line protection circuit further comprises a grounding switch and a second electrified sensor, the input end of the grounding switch is connected to the connection point of the current-limiting fuse and the output connector, the output end of the grounding switch is grounded, the input end of the second electrified sensor is connected to the connection point of the current-limiting fuse and the output connector, and the output end of the second electrified sensor is grounded.
In a specific embodiment, the incoming line protection circuit is connected with a current transformer and a voltage transformer, and the outgoing line protection circuit is connected with a zero sequence current transformer.
In a specific embodiment, the cabinet body is a combined cabinet body formed by splicing aluminized core plates, the cabinet body comprises an incoming line cabinet and an outgoing line cabinet, the incoming line protection circuit is arranged in the incoming line cabinet, and the outgoing line protection circuit is arranged in the incoming line cabinet.
The high-voltage switch cabinet provided by the invention is provided with the incoming line and outgoing line protection circuit consisting of the vacuum circuit breaker, the current-limiting fuse, the resistance-capacitance absorber and the like, and the disaster impact and damage to power equipment caused by huge short-circuit current are effectively solved, so that the safety of a power grid is ensured.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings which are needed in the embodiments and are practical will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts. Wherein,
fig. 1 is a schematic structural diagram of a small-sized high-voltage switch cabinet according to an embodiment of the invention;
fig. 2 is a schematic structural diagram of an incoming line protection circuit and an outgoing line protection circuit in the small-sized high-voltage switch cabinet in the embodiment of fig. 1.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description thereof.
As shown in fig. 1 and 2, in a specific embodiment, the small-sized high-voltage switch cabinet provided by the invention comprises a cabinet body with a rectangular parallelepiped structure, wherein a bus 3, and an incoming line protection circuit 1 and an outgoing line protection circuit 2 connected to the bus 3 are arranged in the cabinet body.
High-voltage current enters the high-voltage switch cabinet through the incoming line protection circuit 1 and is correspondingly processed by various electrical devices connected to the bus 3, and the processed high-voltage current is finally output to a secondary power distribution user side through the outgoing line protection circuit 2. Wherein:
inlet wire protection circuit 1 includes isolator 11 and vacuum circuit breaker 12, vacuum circuit breaker 12's input with inlet wire protection circuit 1's input joint is connected, vacuum circuit breaker 12's output with isolator 11's input is connected, isolator 11's output is connected to generating line 3.
The cooperation is used isolator 11 with vacuum circuit breaker 12, when the huge short-circuit current appears in the circuit, can in time cut off the circuit through isolator 11 and vacuum circuit breaker 12 to prevent the accident and enlarge, guarantee high tension switchgear's safe operation.
In this embodiment, be connected with a plurality of current transformer 15 and voltage transformer 16 on the inlet wire protection circuit 1, current transformer 15 with voltage transformer 16 can gather in real time current, the voltage signal on the inlet wire protection circuit to in time discover the electrical fault on the inlet wire protection circuit.
In this embodiment, the incoming line protection circuit 1 further includes an arrester 13 and a first belt sensor 14, an input end of the arrester 13 is connected to a connection point between the vacuum circuit breaker 12 and the input connector, an output end of the arrester 13 is grounded, an input end of the first belt sensor 14 is connected to a connection point between the vacuum circuit breaker 12 and the input connector, and an output end of the first belt sensor 14 is grounded. Wherein: the lightning arrester 13 can connect the transient ultrahigh voltage introduced by the thunder and lightning to the ground in time, so as to prevent the transient ultrahigh voltage from damaging electrical equipment in the high-voltage switch cabinet. The first belt sensor 14 can display whether the inlet wire protection circuit 1 has operating voltage, and when the inlet wire protection circuit 1 has operating voltage, the first belt sensor 14 emits flash light to warn people that high-voltage equipment is electrified.
The outgoing line protection circuit 2 comprises a current limiting fuse 21 and a resistance-capacitance absorber 22, the input end of the current limiting fuse 21 is connected with the bus 2, the output end of the current limiting fuse 21 is connected to the output joint of the outgoing line protection circuit 3, the input end of the resistance-capacitance absorber 22 is connected to the connection point of the current limiting fuse 21 and the bus 2, and the output end of the resistance-capacitance absorber 22 is grounded.
When a large short-circuit current appears on the outgoing line protection circuit 2, the current-limiting fuse 21 is instantly fused, so that the outgoing line protection circuit 3 is disconnected from the bus 2, and the accident is prevented from being expanded. After the current limiting fuse 21 is opened, the current remaining on the bus bar 2 is absorbed by the rc absorber 22 and finally flows to the ground.
The outgoing line protection circuit 2 is connected with a zero sequence current transformer 25, when an electric shock or leakage fault occurs in the outgoing line protection circuit 2, the secondary side of the zero sequence current transformer 25 outputs a zero sequence current, so that equipment on a connected secondary line is protected (power supply is cut off, alarm and the like).
In this embodiment, the outgoing line protection circuit 2 further includes a ground switch 23 and a second electrified sensor 24, an input end of the ground switch 23 is connected to a connection point between the current-limiting fuse 21 and the output connector, an output end of the ground switch 23 is grounded, an input end of the second electrified sensor 24 is connected to a connection point between the current-limiting fuse 21 and the output connector, and an output end of the second electrified sensor 24 is grounded.
The second electrified sensor 24 can display whether the outgoing line protection circuit 2 has operating voltage, and when the outgoing line protection circuit 2 has operating voltage, the second electrified sensor 24 emits flash light to warn people that the high-voltage equipment is electrified.
In this embodiment, the cabinet body is a combined cabinet body formed by assembling aluminum-clad core plates, and the cabinet body is separated by a partition plate and is formed with a plurality of sub-cabinet bodies including an incoming line cabinet and an outgoing line cabinet. The incoming line protection circuit 1 is arranged in the incoming line cabinet, and the outgoing line protection circuit 2 is arranged in the incoming line cabinet.
The design of the combined cabinet body facilitates the hoisting and installation of the high-voltage switch cabinet in the embodiment, and the sectional installation, management and debugging of various electrical elements are facilitated through the sections of the sub-cabinet bodies.
The invention has been described above with a certain degree of particularity. It will be understood by those of ordinary skill in the art that the description of the embodiments is merely exemplary and that all changes that come within the true spirit and scope of the invention are desired to be protected. The scope of the invention is defined by the appended claims rather than by the foregoing description of the embodiments.
Claims (4)
1. A small-size special high-voltage board which characterized in that: it includes the cabinet body, the internal generating line that is equipped with of cabinet and connects inlet wire protection circuit and the protection circuit of being qualified for the next round of competitions on the generating line, wherein:
the incoming line protection circuit comprises an isolating switch and a vacuum circuit breaker, wherein the input end of the vacuum circuit breaker is connected with the input connector of the incoming line protection circuit, the output end of the vacuum circuit breaker is connected with the input end of the isolating switch, and the output end of the isolating switch is connected to the bus;
the outgoing line protection circuit comprises a current-limiting fuse and a resistance-capacitance absorber, wherein the input end of the current-limiting fuse is connected with the bus, the output end of the current-limiting fuse is connected to the output connector of the outgoing line protection circuit, the input end of the resistance-capacitance absorber is connected to the connection point of the current-limiting fuse and the bus, and the output end of the resistance-capacitance absorber is grounded.
2. A small, dedicated high-voltage cabinet according to claim 1, characterized in that:
the incoming line protection circuit further comprises a lightning arrester and a first electrified sensor, wherein the input end of the lightning arrester is connected to the connection point of the vacuum circuit breaker and the input connector, the output end of the lightning arrester is grounded, the input end of the first electrified sensor is connected to the connection point of the vacuum circuit breaker and the input connector, and the output end of the first electrified sensor is grounded;
the outgoing line protection circuit further comprises a grounding switch and a second electrified sensor, the input end of the grounding switch is connected to the connection point of the current-limiting fuse and the output connector, the output end of the grounding switch is grounded, the input end of the second electrified sensor is connected to the connection point of the current-limiting fuse and the output connector, and the output end of the second electrified sensor is grounded.
3. A small, dedicated high-voltage cabinet according to claim 1, characterized in that: the incoming line protection circuit is connected with a current transformer and a voltage transformer, and the outgoing line protection circuit is connected with a zero sequence current transformer.
4. A small-sized dedicated high-voltage cabinet according to any one of claims 1 to 3, wherein: the cabinet body is a combined cabinet body formed by splicing aluminized core plates, the cabinet body comprises a wire inlet cabinet and a wire outlet cabinet, the wire inlet protection circuit is arranged in the wire inlet cabinet, and the wire outlet protection circuit is arranged in the wire inlet cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711068445.3A CN107611956A (en) | 2017-11-03 | 2017-11-03 | A kind of small high voltage switch cubicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711068445.3A CN107611956A (en) | 2017-11-03 | 2017-11-03 | A kind of small high voltage switch cubicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107611956A true CN107611956A (en) | 2018-01-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711068445.3A Pending CN107611956A (en) | 2017-11-03 | 2017-11-03 | A kind of small high voltage switch cubicle |
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| Country | Link |
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| CN (1) | CN107611956A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110535116A (en) * | 2019-09-10 | 2019-12-03 | 北京华电瑞通电力工程技术有限公司 | A kind of arc extinction cabinet and small current neutral grounding system |
| CN111190076A (en) * | 2020-03-06 | 2020-05-22 | 安徽友创电力技术有限公司 | Current line selection device and line selection method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202042813U (en) * | 2011-04-27 | 2011-11-16 | 上海市电力公司 | Switch type 10 kV temporary box type power transformation device |
| CN104242257A (en) * | 2013-06-20 | 2014-12-24 | 沈阳工业大学 | Method and device for realizing synergic protection of units of ring main unit |
| CN204258129U (en) * | 2014-11-17 | 2015-04-08 | 四川川鸿电气设备有限责任公司 | A kind of High-voltage Incoming Cabinet |
| CN207638326U (en) * | 2017-11-03 | 2018-07-20 | 黄在先 | A kind of small high voltage switch cubicle |
-
2017
- 2017-11-03 CN CN201711068445.3A patent/CN107611956A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202042813U (en) * | 2011-04-27 | 2011-11-16 | 上海市电力公司 | Switch type 10 kV temporary box type power transformation device |
| CN104242257A (en) * | 2013-06-20 | 2014-12-24 | 沈阳工业大学 | Method and device for realizing synergic protection of units of ring main unit |
| CN204258129U (en) * | 2014-11-17 | 2015-04-08 | 四川川鸿电气设备有限责任公司 | A kind of High-voltage Incoming Cabinet |
| CN207638326U (en) * | 2017-11-03 | 2018-07-20 | 黄在先 | A kind of small high voltage switch cubicle |
Non-Patent Citations (1)
| Title |
|---|
| 陈元丽: "《现代建筑电气设计实用指南》", 31 January 2000 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110535116A (en) * | 2019-09-10 | 2019-12-03 | 北京华电瑞通电力工程技术有限公司 | A kind of arc extinction cabinet and small current neutral grounding system |
| CN111190076A (en) * | 2020-03-06 | 2020-05-22 | 安徽友创电力技术有限公司 | Current line selection device and line selection method thereof |
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Application publication date: 20180119 |